If you have a couple LEDs and a known-good battery, you could probably swap the contacts around until the LED comes on. I don't think the battery will be powerful enough to short over the diode, and the LED only works one way. But, yes, polarity does matter with LEDs and other diodes. (Diodes act sort of like a one-way valve for electricity, IIRC, but don't quote me on that.)

Xehn wrote:I think a switch can be placed anywhere in the circuit, but I may be wrong.

That'd be correct, assuming everything's in series (in one loop). The best place to put it would be wired to the battery compartment, but it can go just about anywhere. Assuming you don't run into some weird exotic switch, if everything works now, then installing a switch shouldn't mess anything up.

I'm still trying to wire the LEDs so they work but I've finished all my sculpting and painting work.
I've got to complete the weapons as well.

Here's some head shots, let me know what you guys think.

I even added small details behind the chin and cheeks to look like pipes that would move them in the real full-size robot.

Here's how the eyes will light up. Right now I'm borrowing the test LED kit.

Plans: I wanted it to remain humanoid but give it a 'bulldog' like style with the 'cheeks' and mouth. I also wanted to give it the Red, White, and Blue color scheme of a typical Autobot leader.

The red in the back of the head is actually part of the "battle mask" which the actual character it would flip over the face to the chin and silver panels would extend up and over the back of the head. I havent added the folded and closed panels for 'non-battle mode'

In my actual figure I'm going to make the helmet to go over top the head.

Like to RP? Check out my site, it needs members, all are welcome. If we don't have something you like feel free to add it.

UGH! I hate to double post but since nobody else has stuff to show off.

Mass Effect Customs: Still in progress
Humans - The heads I ordered are custom casts and haven't arrived yet.
My Female character: I still need to scilpt the Armor on her.
Not much more than a repaint with a swapped head. I did sculpt over the circle hole that all Iron Man figures have. on the chest.

This one is going to be a Turian, I have a lot of sculpting to do.

I also have plans for a Krogan, the Figure I'll be using is an Elite Ranger and doing a lot of Sculpt work.

Like to RP? Check out my site, it needs members, all are welcome. If we don't have something you like feel free to add it.

Before you put that much effert in those customs, you do know that there are a lot of ME figures commiing out, right?
Even if they're not what you want, using those as base for your customs should save you plenty of time.